Table 2. Univariate and multivariate survival analysis.

Variables	Disease-free						Overall
	Univariable			Multivariable			Univariable			Multivariable
	HR (95% CI)	P		HR (95% CI)	P		HR (95% CI)	P		HR (95% CI)	P
Age (continuous)	0.98 (0.95–1.01)	0.312					1.02 (1.00–1.06)	0.074			0.857
Gender (males)	1.53 (0.66–3.59)	0.324					1.50 (0.70–3.24)	0.298
MG	1.41 (0.52–3.83)	0.500					0.82 (0.28–2.37)	0.711
Charlson index	0.85 (0.63–1.15)	0.283					1.21 (0.96–1.53)	0.100		1.24 (0.98–1.58)	0.076
Thymomectomy	1.33 (0.56–3.17)	0.523					1.51 (0.68–3.37)	0.312
VATS resection	0.60 (0.14–2.62)	0.494					1.06 (0.36–3.17)	0.911
Incomplete resection	3.33 (1.35–8.19)	0.009		2.51 (0.99–6.33)	0.052		0.57 (0.13–2.41)	0.445
WHO histology
A–B2	1						1			1
B3	5.46 (2.15–13.87)	<0.001			0.256		1.90 (0.73–4.91)	0.187		2.54 (0.94–6.88)	0.067
Carcinoma	5.27 (1.61–17.24)	0.006			0.198		3.10 (1.13–8.49)	0.028		3.54 (1.26–9.92)	0.016
Stage III–IV	6.78 (2.76–16.65)	<0.001		6.11 (2.47–15.14)	<0.001		1.51 (0.67–3.37)	0.317

HR, hazard ratio; CI, confidence interval; MG, myasthenia gravis; WHO, World Health Organization; VATS, video-assisted thoracic surgery.